1. Turn off the low voltage supply to the ignition coil. To do this, disconnect the multi-pin connector from the ignition coil.
2. Or, disconnect the center high voltage wire of the ignition distributor and connect it to one end of the wire to connect the starter to the auxiliary battery.
3. Connect the other end of this wire tightly to the motor housing or gearbox («mass»).
Note. Recommendation: To prevent fuel from flowing when the engine is cranked, disconnect the fuel pump or remove the fuel pump relay.